Late this afternoon, Apple issued a fix for a fan noise issue that affected a small number of Apple Thunderbolt Displays in a firmware update labeled version 1.1. The 942KB file launches automatically once installed in the Utilities folder and shows on-screen instructions on going through the firmware update procedure. This is the first update specifically for Thunderbolt Display devices, though an earlier patch was issued for Thunderbolt-capable Macs generally in June.
